The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 09, 2004
Filed:
Feb. 25, 2002
Tatsuya Sugita, Takahagi, JP;
Koki Hirano, Hitachinaka, JP;
Tomiya Abe, Juo, JP;
Yuzo Ito, Mito, JP;
Hitachi Cable, Ltd., Tokyo, JP;
Abstract
Linear polarized light beams are separated by wavelength separation filters , and , and make incidence with every two wavelength components either into a polarized light conversion element or into polarized light conversion element , and the optical paths for the light beams separated into two by the polarized light conversion element are joined to form one light beam path for every waveform component. The optical signals of the four wavelength components are reflected either by a mirror or by a mirror , are converged by such as a hologram lens , and, after being reflected by a mirror , are detected for every wavelength component by the photo detector array